NEW ELECTROMAGNETIC FORCE SENSOR: MEASURING THE DENSITY OF LIQUIDS

Z. Abbassi, A. Benabdellah, A. Nakheli

Abstract: We realized an electromagnetic force sensor for measuring the density of liquids by hydrostatic force exerted by liquids on a diver reference which characteristics are precisely known. The accuracy of the sensor is ?m=0.3 mg and referring to the force is ?F = 3µN .We will present in this paper the results of measuring the density of water-ethanol systems which was obtained by the accuracy of ?? = 10-4 g/cm3 . The operating principle of this sensor is based on the fundamental laws of electromagnetism (Faraday-Lenz law). The density changes as a function of the molar fraction are monotonous in accordance with theory and the values of density measured with this device are in good agreement with the results found in the bibliography.

Keywords: Electromagnetic force sensor, accuracy, density.

DOI: https://doi.org/10.15623/ijret.2014.0309012